diff options
Diffstat (limited to 'arch/mips/alchemy/common/setup.c')
| -rw-r--r-- | arch/mips/alchemy/common/setup.c | 160 |
1 files changed, 160 insertions, 0 deletions
diff --git a/arch/mips/alchemy/common/setup.c b/arch/mips/alchemy/common/setup.c new file mode 100644 index 00000000000..1ac6b06f42a --- /dev/null +++ b/arch/mips/alchemy/common/setup.c @@ -0,0 +1,160 @@ +/* + * Copyright 2000, 2007-2008 MontaVista Software Inc. + * Author: MontaVista Software, Inc. <source@mvista.com + * + * Updates to 2.6, Pete Popov, Embedded Alley Solutions, Inc. + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. + * + * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN + * NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, + * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT + * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF + * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON + * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF + * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * + * You should have received a copy of the GNU General Public License along + * with this program; if not, write to the Free Software Foundation, Inc., + * 675 Mass Ave, Cambridge, MA 02139, USA. + */ + +#include <linux/init.h> +#include <linux/ioport.h> +#include <linux/module.h> +#include <linux/pm.h> + +#include <asm/mipsregs.h> +#include <asm/reboot.h> +#include <asm/time.h> + +#include <au1000.h> +#include <prom.h> + +extern void __init board_setup(void); +extern void au1000_restart(char *); +extern void au1000_halt(void); +extern void au1000_power_off(void); +extern void set_cpuspec(void); + +void __init plat_mem_setup(void) +{ + struct cpu_spec *sp; + char *argptr; + unsigned long prid, cpufreq, bclk; + + set_cpuspec(); + sp = cur_cpu_spec[0]; + + board_setup(); /* board specific setup */ + + prid = read_c0_prid(); + if (sp->cpu_pll_wo) +#ifdef CONFIG_SOC_AU1000_FREQUENCY + cpufreq = CONFIG_SOC_AU1000_FREQUENCY / 1000000; +#else + cpufreq = 396; +#endif + else + cpufreq = (au_readl(SYS_CPUPLL) & 0x3F) * 12; + printk(KERN_INFO "(PRID %08lx) @ %ld MHz\n", prid, cpufreq); + + if (sp->cpu_bclk) { + /* Enable BCLK switching */ + bclk = au_readl(SYS_POWERCTRL); + au_writel(bclk | 0x60, SYS_POWERCTRL); + printk(KERN_INFO "BCLK switching enabled!\n"); + } + + if (sp->cpu_od) + /* Various early Au1xx0 errata corrected by this */ + set_c0_config(1 << 19); /* Set Config[OD] */ + else + /* Clear to obtain best system bus performance */ + clear_c0_config(1 << 19); /* Clear Config[OD] */ + + argptr = prom_getcmdline(); + +#ifdef CONFIG_SERIAL_8250_CONSOLE + argptr = strstr(argptr, "console="); + if (argptr == NULL) { + argptr = prom_getcmdline(); + strcat(argptr, " console=ttyS0,115200"); + } +#endif + +#ifdef CONFIG_FB_AU1100 + argptr = strstr(argptr, "video="); + if (argptr == NULL) { + argptr = prom_getcmdline(); + /* default panel */ + /*strcat(argptr, " video=au1100fb:panel:Sharp_320x240_16");*/ + } +#endif + +#if defined(CONFIG_SOUND_AU1X00) && !defined(CONFIG_SOC_AU1000) + /* au1000 does not support vra, au1500 and au1100 do */ + strcat(argptr, " au1000_audio=vra"); + argptr = prom_getcmdline(); +#endif + _machine_restart = au1000_restart; + _machine_halt = au1000_halt; + pm_power_off = au1000_power_off; + + /* IO/MEM resources. */ + set_io_port_base(0); + ioport_resource.start = IOPORT_RESOURCE_START; + ioport_resource.end = IOPORT_RESOURCE_END; + iomem_resource.start = IOMEM_RESOURCE_START; + iomem_resource.end = IOMEM_RESOURCE_END; + + while (au_readl(SYS_COUNTER_CNTRL) & SYS_CNTRL_E0S); + au_writel(SYS_CNTRL_E0 | SYS_CNTRL_EN0, SYS_COUNTER_CNTRL); + au_sync(); + while (au_readl(SYS_COUNTER_CNTRL) & SYS_CNTRL_T0S); + au_writel(0, SYS_TOYTRIM); +} + +#if defined(CONFIG_64BIT_PHYS_ADDR) +/* This routine should be valid for all Au1x based boards */ +phys_t __fixup_bigphys_addr(phys_t phys_addr, phys_t size) +{ + /* Don't fixup 36-bit addresses */ + if ((phys_addr >> 32) != 0) + return phys_addr; + +#ifdef CONFIG_PCI + { + u32 start = (u32)Au1500_PCI_MEM_START; + u32 end = (u32)Au1500_PCI_MEM_END; + + /* Check for PCI memory window */ + if (phys_addr >= start && (phys_addr + size - 1) <= end) + return (phys_t) + ((phys_addr - start) + Au1500_PCI_MEM_START); + } +#endif + + /* + * All Au1xx0 SOCs have a PCMCIA controller. + * We setup our 32-bit pseudo addresses to be equal to the + * 36-bit addr >> 4, to make it easier to check the address + * and fix it. + * The PCMCIA socket 0 physical attribute address is 0xF 4000 0000. + * The pseudo address we use is 0xF400 0000. Any address over + * 0xF400 0000 is a PCMCIA pseudo address. + */ + if ((phys_addr >= 0xF4000000) && (phys_addr < 0xFFFFFFFF)) + return (phys_t)(phys_addr << 4); + + /* default nop */ + return phys_addr; +} +EXPORT_SYMBOL(__fixup_bigphys_addr); +#endif |